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发明名称
Valve insides
摘要
申请公布号
US1854784(A)
申请公布日期
1932.04.19
申请号
US19300465573
申请日期
1930.07.03
申请人
CROWLEY JOHN C
发明人
CROWLEY JOHN C.
分类号
F16K15/20
主分类号
F16K15/20
代理机构
代理人
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